The ZD is a power close, and spring open damper. It has a 24-volt, spring-return, power-closed damper motor used to control circulating air in heating, cooling and ventilating systems. It is used when a normally-open damper is required. The ZD is typically used with the TotalZoneŽ Systems and other electronic mini-zone damper systems. Powered by the same universal motor as the round ARD damper, these dampers install easily with just two wires and include a reliable, mechanical visual position indicator.

Features

. Kevlar gearing reduces wear, more than doubling damper life. . Adjustable range stops. . Mechanical visual position indicator for damper status. . Solid construction using extruded aluminum frame and blades. . Parallel blade design for low leakage performance. . Quieter operation with fewer blades. . Simple, easy-to-wire, two-wire installation. . Reliable, strong, 24-volt spring-return motor. . Fail-safe, normally open operation. . Compatible with conventional and networked zoning. . Damper can be installed in any orientation (mounting side can be on either the bottom or the side of the duct).

The ZD is a power close, and spring open damper. It has a 24-volt, spring-return, power-closed damper motor used to control circulating air in heating, cooling and ventilating systems. It is used when a normally-open damper is required. The ZD is typically used with the TotalZoneŽ Systems and other electronic mini-zone damper systems. Powered by the same universal motor as the round ARD damper, these dampers install easily with just two wires and include a reliable, mechanical visual position indicator.

Features

. Kevlar gearing reduces wear, more than doubling damper life. . Adjustable range stops. . Mechanical visual position indicator for damper status. . Solid construction using extruded aluminum frame and blades. . Parallel blade design for low leakage performance. . Quieter operation with fewer blades. . Simple, easy-to-wire, two-wire installation. . Reliable, strong, 24-volt spring-return motor. . Fail-safe, normally open operation. . Compatible with conventional and networked zoning. . Damper can be installed in any orientation (mounting side can be on either the bottom or the side of the duct).